Gleison Tibau on Friday became the second fighter to be provisionally suspended for a potential Anti-Doping Policy violation under the UFC’s new policy that is being administered by the United States Anti-Doping Agency. The first UFC fighter suspended under the new policy was the recently retired Mirko “Cro Cop” Filipovic . RELATED > Mirko Cro Cop Suspended for Two Years for Anti-Doping Violation There was no specific information available about the nature of Tibau’s violation, other than that it stemmed from an out-of-competition test
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USADA Suspends Gleison Tibau for Potential UFC Anti-Doping Violation – MMA Weekly